850 T-5R L5-2.3L Turbo VIN 58 B5234T5 (1995)
Door Sensor/Switch (For Alarm): Description and Operation
With Deadlock
Deadlock Switch
The deadlock switch consists of a 2-way alternating microswitch which is integrated into the central locking motors in the front and rear door central lack
units. The deadlock switch features one wire far the output signal directly connected to the central locking motor coils and two wires for incoming
signals tram the central locking relay and deadlock relay. The deadlock relay and central lacking relay transmit brief 12 V pulses for locking and
unlocking.
AT-Switch
Deadlock Switch Located At Outer Cam Disc
The AT switch consists of a 2-way alternating micro-switch and it is only fitted to the two front door central lock units, on the outer cam discs.
The AT switch activates or deactivates the car's alarm and it is affected only when the key is used to engage the deadlock setting.
When engaging the deadlock setting, the AT switch is activated when the key is turned approx. 70°, sending a ground signal to the central locking relay
which in turn sends one control signal to the deadlock relay for locking and another control signal to the alarm relay to activate the alarm.
For unlocking, the AT switch is activated after the key is turned just 20°, when just one control signal is sent to the alarm relay for deactivation of the
alarm. The AT switch does not affect the central locking system's functions. When fault tracing the alarm system, see Anti-Theft Alarm.
